Anchor.



PATENTED NOV. 20, 1906.

W. W. WILKISON.

ANCHOR.

APPLICATION FILED JULY 6, 1906.

\ points 11.

are made shorter than if the device was in- UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Nov. 20, 1906.

Application filed July 6, 1906. Serial No. 324 942.

To a whom, it may concern" Be it known that I, WILLIAM WALKER WILKISON,a citizen of the United States, residing at Avalon, in the county ofLivingston and State of Missouri, have invented certain new and usefulImprovements in Anchors, of which the following is a specification.

My invention relates to that class of an- I chors utilized to receivecables employed to stay fence-posts, telegraph-posts, &c;; and myobject'is to provide a device of this .character which is simple inconstruction and thoroughly reliable for the purpose intended.

In order that the invention may be fully understood, reference will nowbe made to the accompanying drawings, in which Figure 1 represents anelevation of my improved anchor, showing the operation thereof in dottedlines; Fig. 2 is a cross-section taken on line II II of Fig. 1. Fig. 3is a plan view of a circular head forming part of the invention. Fig. 4is an elevation of one of a series of flukes used in holding the anchorin an embedded position.

In carrying out the invention I employ a shank 1, provided at its upperand lower ends with left and right threads 2 and 3, respectively.

4 des'gnates a conical spreader fixed to the shank above'the threads 3.

5 designates a circular head internally threaded to engage threads 3,upon which it is adapted to travel. Said head has a series ofradially-arranged openings 6, inclining outwardly toward their upperends, so that the upper ends of a series of flukes 7 may spreadoutwardly to the dotted position shown in Fig. 1. Each fluke has areduced lower terminal 8 extending through its respective opening 6 andprovided with a cotter-pin 9, which, with shoulders 10 at the upper endsof terminals 8, prevent the withdrawal of the hike from said opening'The upper ends of the flukes are bifurcated and terminate in 12designates an eye internally threaded at its lower portion for thereception of threads 2, upon which it is adapted to travel in anopposite direction to head 5. Said eye is provided for the purpose ofreceiving and tensioning the cable 13v employed in staying the upright.

The device is intended more particularly for use in rock, and for'thatreason the flukes tended to be embedded in soil.

I In practice a hole little larger than the diameter of head 6 is boredinto the stone to the proper depth. The cable is then passed through eye12, and the device-is dropped into the hole with the flukes foldedagainst the lower end of the spreader. Eye 12 is then held from turning,while shank 2 is rotated with a wrench or other device adapted to graspthe rectangular portion 14 of said shank. The rotary movement of theshank will cause head 5 to travel upwardly on threads 3 and carry flukes7 upwardly therewith until their pointed ends 11 are forced intoengagement with the sides of the hole by spreader 4. The operation ofturning the rod is continued until points 11 have become suifioientlyembedded in the stone to reliably hold the anchor therein.Simultaneously with the upward movement of head 5 eye 12 is caused totravel downwardly upon threads 2, and thus tension cable 13, so that thelatter will properly erform its function of supportingthe uprig t.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. An anchor consisting of a shank having a threaded lower portion, aspreader on said shank above the threads, a head adjustably engaging thethreads so that it may move up or down thereon, and flukes looselysecured at their lower ends to the head and adapted to loosely embracethe spreader at their upper ends when in a closed condition.

2. An anchor consisting of a shank having right and left threads atits-lower and upper ends, a spreaderon said shank above the lowerthreads, a head adjustably engaging the lower threads, flukes looselysecured at their. lower ends to the head and adapted to loosely embracethe spreader at their upper ends when in a closed condition; and aninternally-threaded eye adjustably engaging the upper threads.

3. An anchor consisting of a shank having a threaded lower portion, aconical spreader on said shank above the threads, a head adjustablyengaging the threads so that it may move up or down thereon, and flukesloosely secured at their lower ends to the head and adapted to looselyembrace the spreader at their upper ends when in a closed condition.v

4. An anchor consisting of a shank having a threaded lower portion, aspreader on said shank above the threads, a head adjustably engaging thethreads and provided with a series of radial openings, and flukes havingI shoulders bearing against the upper surface reduced lower terminalsextending loosely of the head, and pins extending through the throughsaid openings. reduced terminals and engaging the under 5. An anchorconsisting of a shank having surface of the head. 5 a threaded lowerportion, a spreader on said 1 In testimony whereof I allix my signatureI 5 shank above the threads, a head adjustably in the presence oftwowitnesses. engaging the threads and provided with a se- WILLIAMWALKER \Vlirlilsoxv ries of radial openings, flukes having re-Witnesses:

duoed lower terminals extending loosely I W. J. RiuvLixs, IO throughsaid openlngs, said flukes having} M. G. BLAKELEY.

